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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Insightly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Sylvania Waters, on the shores of Gwawley Bay in southern Sydney, can expect a mild, partly cloudy day according to the live forecast above, with light south-easterly breezes off the bay keeping conditions comfortable for early-autumn outdoor plans.
What’s driving today’s weather in Sylvania Waters?
A weak high-pressure ridge over the Tasman Sea is feeding a moist onshore flow across Sydney’s south. That’s why Sylvania Waters will see patchy cloud and a light south-easterly wind, typical of this bayside suburb in March. The live forecast above shows the current temperature and wind details—expect only a few brief spots of drizzle overnight, mostly clearing by mid-morning.
How does the bay influence Sylvania Waters’ weather?
Sylvania Waters sits right on Gwawley Bay, part of the Georges River estuary. Localised sea breezes often keep afternoons a degree or two cooler than inland suburbs such as Sutherland, while the surrounding mangroves and waterways trap overnight moisture, lifting humidity and fog potential. Today’s light wind means minimal bay breezes, so temperatures will stay close to the live forecast above.
Will it rain in Sylvania Waters today?
Only a slight chance—less than 20%—of a light shower late tonight, according to the Bureau of Meteorology. The live forecast above shows no significant rainfall during the day, so you can leave the umbrella behind for any errands along Princes Highway.
Is the UV index high in Sylvania Waters this time of year?
Moderate to high. March UV peaks around 8–9 in the middle of the day, so slip on a hat and sunscreen if you’re heading to Gwawley Bay foreshore or the nearby shops at Sylvania Community Centre.
What’s the best time for a walk along the bay today?
Mid-to-late morning, before sea breezes strengthen. The live forecast above indicates light winds until about 2 pm, making the Sylvania Waters boardwalk comfortable for a stroll or a picnic at Myer Park.
Sources
For broader conditions across the state, visit our Australia weather hub or check the Sydney Weather page. If severe storms develop, our Severe Weather Warning page has the latest alerts for the Sutherland Shire.